【實用書籍app】iElements - Periodic Table of The Chemical Elements|最夯免費app

This application is a SIMPLE periodic table of the chemical elements.About*****The periodic table of the chemical elements is a tabular display of the chemical elements. Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869, who intended the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior.Features*******- The periodic table (pinch-zoomable table)- Descriptions and illustrations of the elementsThe following properties are displayed for each element if the value is currently known by science.Name, Element categoryGroup, Standard atomic weightElectron configurationElectrons per shellPhase, Density (near r.t.)Liquid density Melting point Boiling point Heat of fusion Heat of vaporization Specific heat capacity (25 °C) Oxidation states Electronegativity Ionization energiesAtomic radius Covalent radius Van der Waals radius Crystal structure Magnetic ordering Electrical resistivity (20 °C)Thermal conductivity (300 K) Thermal expansion (25 °C) Speed of sound (thin rod) Young's modulus Shear modulus Bulk modulus Poisson ratio Mohs hardness Brinell hardness CAS registry number Note: iAd supported application.

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